Scott Peterson is a liar, a bimbo and a salesman. But now, after three days at Peterson’s gruesome double-murder trial, watching the Modesto Sleazebag regularly yuk it up with his lawyers while others wince at pictures of his family’s rotting corpses, I’m in on the joke:

He just might walk away from this inconvenient mess. Straight out the front door.

Yesterday, Peterson once again strolled into the courtroom here in his tan business suit, newly floppy hairdo, and love-me smile. For the first few hours, hapless prosecutor Rick Distaso numbed the jury into a semi-coma.

You see, the day before Peterson’s radiantly lonely, pregnant wife Laci disappeared, she went into a hair salon with her hubby. And guess what? None of the cops or investigators hunting for Laci, nor the rocket scientists who double as California hairdressers, deemed it necessary to save the video surveillance tape that might have captured Laci’s final movements.

Oh brother.

It may be early in this excruciating morality play. But from O.J. to Martha to Jayson Williams, my track record on this stuff has been right on the money. And my money predicts that this boyish scoundrel, a man who lived a double life with another woman, and tried to sell off his wife’s possessions the minute she was gone – a guy who looks too darn glad to be a widower – is definitely not going to meet death at the end of lethal injection, as prosecutors dream.

I think he’ll get away with it.

So weak is the prosecution case, it’s startling how this trial even came to be. Let’s recap:

Scott gave no confession. There isn’t a single witness. There isn’t even a shred of physical evidence that ties Scott to the deaths of Laci and his unborn son, Conner – no blood, no skin. There’s just a single strand of hair, that prosecutors say might have come from Laci’s head, found in Scott’s boat. Even that’s in dispute.

What’s more, scientists can’t even determine how Laci and Conner died, since their bodies were so badly decomposed when they were found. They can’t say if they were knifed, shot, bludgeoned or drowned. They can’t even say for a fact they were murdered.